CVE-2020-21674
Last modified
CVE-2020-21674 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Heap-based buffer overflow in archive_string_append_from_wcs() (archive_string.c) in libarchive-3.4.1dev allows remote attackers to cause a denial of service (out-of-bounds write in heap memory resulting into a crash) via a crafted archive file. NOTE: this only affects users who downloaded the development code from GitHub. EPSS estimates a 2.06% chance of exploitation in the next 30 days.
Description
Heap-based buffer overflow in archive_string_append_from_wcs() (archive_string.c) in libarchive-3.4.1dev allows remote attackers to cause a denial of service (out-of-bounds write in heap memory resulting into a crash) via a crafted archive file. NOTE: this only affects users who downloaded the development code from GitHub. Users of the product's official releases are unaffected.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Libarchive | Libarchive | 3.4.1 |
References
- https://github.com/libarchive/libarchive/commit/4f085eea879e2be745f4d9bf57e8513ae48157f4Patch, Third Party Advisory
- https://github.com/libarchive/libarchive/issues/1298Third Party Advisory
- https://github.com/libarchive/libarchive/commit/4f085eea879e2be745f4d9bf57e8513ae48157f4Patch, Third Party Advisory
- https://github.com/libarchive/libarchive/issues/1298Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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